80 lines
3.4 KiB
C
80 lines
3.4 KiB
C
/* $NetBSD: terminal.h,v 1.5 2003/08/07 11:16:37 agc Exp $ */
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/*-
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* Copyright (c) 1988 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)terminal.h 4.3 (Berkeley) 4/26/91
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*/
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#define INCLUDED_TERMINAL
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/*
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* In the situation where we have a copy of the terminal screen in front
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* of us, here are some macros to deal with them.
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*/
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#define TermAttributes(x) (TermIsStartField(x)? GetTerminal(x)&0xff : \
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GetTerminal(WhereTermAttrByte(x))&0xff)
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#define TermIsStartField(x) ((GetTerminal(x)&ATTR_MASK) == ATTR_MASK)
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#define TermNewField(p,a) SetTerminal(p, (a)|ATTR_MASK)
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#define TermDeleteField(p) SetTerminal(p, 0)
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#define TermIsNonDisplay(x) \
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((TermAttributes(x)&ATTR_DSPD_MASK) == ATTR_DSPD_NONDISPLAY)
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#define TermIsHighlighted(x) \
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(((TermAttributes(x)&ATTR_DSPD_MASK) == ATTR_DSPD_HIGH) \
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&& !TermIsStartField(x))
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#define TerminalCharacterAttr(c,p,a) (IsNonDisplayAttr(a) ? ' ':c)
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#define TerminalCharacter(c,p) TerminalCharacterAttr(c,p,FieldAttributes(p))
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/*
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* Is the screen formatted? Some algorithms change depending
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* on whether there are any attribute bytes lying around.
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*/
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#define TerminalFormattedScreen() \
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((WhereTermAttrByte(0) != 0) || ((GetTerminal(0)&ATTR_MASK) == ATTR_MASK))
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#define NeedToRedisplayFields(p) ((TermIsNonDisplay(p) != IsNonDisplay(p)) || \
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(TermIsHighlighted(p) != IsHighlighted(p)))
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#define NeedToRedisplayFieldsAttr(p,c) ( \
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(TermIsNonDisplay(p) != IsNonDisplayAttr(c)) || \
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(TermIsHighlighted(p) != IsHighlightedAttr(c)))
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#define NotVisuallyCompatibleAttributes(p,c,d) ( \
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(IsNonDisplayAttr(c) != IsNonDisplayAttr(d)) || \
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(IsHighlightedAttr(c) != IsHighlightedAttr(d)))
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#define NeedToRedisplayAttr(c,p,a) \
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((c != GetTerminal(p)) || NeedToRedisplayFieldsAttr(p,a))
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#define NeedToRedisplay(c,p) NeedToRedisplayAttr(c,p,FieldAttributes(p))
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#define GetTerminal(i) GetGeneric(i, Terminal)
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#define GetTerminalPointer(p) GetGenericPointer(p)
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#define SetTerminal(i,c) SetGeneric(i,c,Terminal)
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